<!DOCTYPE html>
<html>
<head>
    <title></title>
    <meta name="viewport" content="width=device-width,user-scalable=no">
    <style type="text/css">
        html,body {
            padding: 0;
            margin: 0;
            width: 100%;
            height: 100%;
            -webkit-user-select: none;
            user-select: none;
        }
    </style>

</head>
<body>
<div style='position: fixed;z-index: 1;top:0px;left:0;width:40px;height: 40px;background-color: red'></div>
<video height="100%" id="mainvideo" x5-video-player-type="h5" x5-video-player-fullscreen="true" x-webkit-airplay="true" playsinline webkit-playsinline="true"  src="http://7xvl2z.com1.z0.glb.clouddn.com/nigg2.mp4"></video>
</body>
</html>